tigra roof fault making a clicking noise, what I did to fix mine

as the parcel shelf moved or should of moved there was a load clicking noise coming from the boot area, basically it was the parcel shelf clutch engaging as the motor hadn't stopped at the correct time, to resolve this issue I opened the roof to the point where the boot is up, roof folded down and parcel shelf upwards, you can now see the mechanism, from the nearside you can see and reach the torx T20 screw, undo this screw enough that the cam is free to move (rotationally), you should hear a micro switch as
you rotate it back and forth, I tightened to screw just before the switch clicked (may need to try slight adjustments to suit your car).
Tried the roof up and down a few times and the clutch no longer clicks with the roof working fine.

hope this helps.